« on: Today at 20:46:57 »
No, not fully across, just at the elbow.Linearly, yes, it is moving in the opposite direction as the elbow (relative to the ice). But that's linear momentum, also conserved. Her total linear momentum was zero and stays that way regardless of where she puts her arms.
Suddenly the leading edge of Ur lower arm is facing backwards.
The hand and elbows are all still spinning the same direction (up) so bending them that way didn't change the direction of the angular velocity or momentum of anything. If she's really talented, she can impart angular momentum in the downward direction to her long braided hair while she's spinning, but here total angular momentum is still unaffected by that.
It appears to be a paradox if U look at it from the point of viewThe conservation laws are actually derived from the laws governing those tiny particles. In a closed system of any number (small or large) of atoms, it is impossible to alter the linear or angular momentum of the system. These are old laws of motion first stated by Newton. No new fancy physics going on here.
of individual atoms, having momentum, and taking time to realign.
I thought the Coriolis was all about stuff going N-S appearing to curve.Naw, it's stuff going towards or away from the spin axis that does it. So there's no Coriolis force at the surface of Earth at the equator because motion north and south do not change your distance from the axis there. Toilets flushing don't spin (unless they utilize angled jets). No hurricanes at the equator.
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